Weechat

http://www.weechat.org/
Weechat is a modern IRC client, based on a powerful text-driven interface. It is designed with extensibility in mind, featuring a wide array of options, plugins (like spellchecking) and several scripting languages. It allows for multiple connections to different servers. Weechat has UTF-8 support and may use multiple character sets for encoding and decoding messages.

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